Harley Drivetrain
Harley Bike Drivetrain Parts at JJ Motorsports
Upgrade your Harley's drivetrain for smoother power delivery and reliability with components from JJ Motorsports. Our selection includes transmission mounting plates, offset sprockets, mechanical reverse kits, starter spacers, pulley spacers, and primary covers designed for heavy-duty use, easy bolt-in installation, and enhanced performance. Compatible with Big Twins, Softail, Dyna, and more, these parts feature chrome finishes, billet aluminum, and CNC-machined steel for corrosion resistance and custom fitment.
Shop trusted brands like Paughco for primary covers and PBI for sprockets. Explore related categories such as Harley engine parts for rebuilds or Harley suspension for balanced setups.
Top Harley Drivetrain Products
- PAUGHCO Transmission Plate - OE Type 4-Speed 218 – Heavy-duty steel for Big Twins with 4-speed transmissions.
- PBI Offset Transmission Sprocket - 22-Tooth 281-22 – CNC-machined chromoly steel with 0.750" offset for 530 chains.
- MOTOR TRIKE Mechanical Reverse Kit MTTR-0025 – Lightweight aluminum with electronic cut-off for easy parking.
- TERRY COMPONENTS Starter Spacer 779000 – Billet aluminum, 1-1/2" thick for longer starters.
- PINGEL Rear Pulley Spacer 62051 – Billet aluminum for wider tires up to 142mm.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
PAUGHCO Transmission Plate - OE Type 4-Speed 218
PAUGHCO
$151.95Will accommodate most Big Twins with four-speed transmissions from stock Knuckleheads to modern customs, Heavy-duty construction, For 4-speed transmissions in Paughco standard width swingarm and rigid frames and stock HD swingarm and rigid frames (OEM’s...11050011- SKU:
- 11050011
- Availability:
- Ships Same Business Day
- Weight:
- 3.74 LBS
- MATERIAL:
- STEEL
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TRANSMISSION TYPE:
- 4-SPEED
- UNITS:
- EACH
- PRODUCT NAME:
- MOUNTING PLATE
$151.95 -
PAUGHCO Plate - 5/4 Speed Conversion 218-1
PAUGHCO
$151.95Heavy-duty construction, Will accommodate most Big Twins with four-speed transmissions from stock Knuckleheads to modern customs, Easy bolt-in application, For Paughco Easyride or stock Softail frames when using 4-speed transmissions, Made in the U.S.A.11050012- SKU:
- 11050012
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- MOUNTING PLATE
- TYPE:
- TRANSMISSION
- MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
$151.95 -
PAUGHCO Transmission Mounting Plate 218-A
PAUGHCO
$112.95Heavy-duty construction, Will accommodate most Big Twins with five-speed transmissions from stock Knuckleheads to modern customs, Easy bolt-in application, For Paughco rigid frames when using Softail 5-speed transmissions, Made in the U.S.A.11050013- SKU:
- 11050013
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- MOUNTING PLATE
- TRANSMISSION TYPE:
- 5-SPEED
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
$112.95 -
PBI Offset Transmission Sprocket - 22-Tooth 281-22
PBI
$113.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...PBI28122- SKU:
- PBI28122
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- NICKEL
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 22
- CHAIN SIZE:
- 530
- OFFSET IMPERIAL:
- 0.750'
- TYPE:
- MAINSHAFT
- MATERIAL:
- STEEL
- UNITS:
- EACH
$113.95 -
PBI Offset Transmission Sprocket - 23-Tooth 281-23
PBI
$127.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...PBI28123- SKU:
- PBI28123
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- TOOTH COUNT:
- 23
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- CHAIN SIZE:
- 530
- OFFSET IMPERIAL:
- 0.750'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL
- PRODUCT NAME:
- SPROCKET
$127.95 -
PBI Offset Transmission Sprocket - 24-Tooth 281-24
PBI
$136.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...PBI28124- SKU:
- PBI28124
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- CHAIN SIZE:
- 530
- OFFSET IMPERIAL:
- 0.750'
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 24
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- COLOR/FINISH:
- NICKEL
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
$136.95 -
PBI Offset Transmission Sprocket - 23-Tooth 283-23
PBI
$110.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...12120137- SKU:
- 12120137
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- CHAIN SIZE:
- 530
- TOOTH COUNT:
- 23
- TYPE:
- MAINSHAFT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- NICKEL
- RIDING STYLE:
- STREET
- OFFSET IMPERIAL:
- 0.500'
- UNITS:
- EACH
$110.95 -
PBI Transmission Mainshaft Sprocket - 19-Tooth - XL 277-19
PBI
$65.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191081- SKU:
- DS191081
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- COLOR/FINISH:
- SILVER
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 19
$65.95 -
PBI Transmission Mainshaft Sprocket - 22-Tooth - XL 277-22
PBI
$75.95Premium chromoly steel (8620) heat-treated one-piece sprockets machined on computer-controlled lathes, Broached specifically for maximum spline-to-shaft contact for optimum load bearing, For use with 530 chain, Made in the U.S.A.DS191091- SKU:
- DS191091
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 22
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
$75.95 -
PBI Offset Transmission Sprocket - 21-Tooth 281-21
PBI
$107.95CNC-machined from a premium nickel, chromoly steel (8620), case-hardened and finished with an electroless nickel plating for corrosion/wear resistance and lubricity, Sprockets are drilled and tapped to accommodate late-model lock plate, PART #DS-360182,...PBI28121- SKU:
- PBI28121
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 530
- TYPE:
- MAINSHAFT
- COLOR/FINISH:
- NICKEL
- OFFSET IMPERIAL:
- 0.750'
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 21
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
$107.95 -
MOTOR TRIKE Mechanical Reverse Kit MTTR-0025
MOTOR TRIKE INC
$1,495.95Make parking anywhere possible, Constructed from lightweight aluminum, chromed and zinc-plated, Equipped with an electronic cut-off switch to protect transmission from operator error, No exhaust modification needed when used with OEM exhaust, Do not...11030031- SKU:
- 11030031
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- MECHANICAL REVERSE KIT
- FEATURES:
- HYDRAULIC CLUTCH
- UNITS:
- KIT
- STYLE:
- REPLACEMENT
$1,495.95 -
TERRY COMPONENTS Starter Spacer 779000
TERRY COMPONENTS
$142.95Used to space the filler spout outward when using a longer aftermarket starter, Machined billet aluminum with a polished finish, 1-1/2" thick, Made in the U.S.A., Gaskets and longer bolts must be purchased separately.DS196233- SKU:
- DS196233
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- COLOR/FINISH:
- POLISHED
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SPACER BLOCK
$142.95 -
PINGEL Rear Pulley Spacer 62051
PINGEL
$81.95Allows installation of tires up to 142mm wide without any other modification, CNC-machined from billet aluminum, Made in the U.S.A.12010098- SKU:
- 12010098
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- SPACER
- TYPE:
- PULLEY
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
$81.95 -
PAUGHCO Inner Primary Cover - Chrome 752
PAUGHCO
$239.95Made in the U.S.A.11070187- SKU:
- 11070187
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- INNER PRIMARY
$239.95 -
PAUGHCO Inner Primary Cover - Chrome 753E
PAUGHCO
$239.95Made in the U.S.A.11070188- SKU:
- 11070188
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
PAUGHCO Outer Primary Cover 751
PAUGHCO
$314.95Made in the U.S.A.11070190- SKU:
- 11070190
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- FEATURES:
- FOR USE WITH COMPENSATING SPROCKET
- RIDING STYLE:
- STREET
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
$314.95 -
PAUGHCO Inner Primary Cover - Black B752
PAUGHCO
$251.95Made in the U.S.A.11070191- SKU:
- 11070191
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
$251.95 -
PAUGHCO Inner Primary Cover - Black B753E
PAUGHCO
$251.95Made in the U.S.A.11070192- SKU:
- 11070192
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- COLOR/FINISH:
- GLOSS
$251.95 -
PAUGHCO Outer Primary Cover B750
PAUGHCO
$317.95Made in the U.S.A.11070193- SKU:
- 11070193
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- FEATURES:
- FOR USE WITHOUT COMPENSATING SPROCKET
- COLOR/FINISH:
- GLOSS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
$317.95 -
PAUGHCO Derby Cover B757
PAUGHCO
$69.95Fit stock H-D's as well as Paughco outer primary covers, Made in the U.S.A.11070195- SKU:
- 11070195
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- TYPE:
- DERBY
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- MOUNTING STYLE:
- 8 HOLE
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$69.95
